Horizontal ruler:\\
{{{----}}}
gives you:
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Paragraphs are delimitted by a blank line.
{{{This is Paragraph 1

This is Paragraph 2
}}}
gives you:\\
This is Paragraph 1

This is Paragraph 2

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Forced Line Break: 
{{{This is first line,\\this is second line!}}}

gives you:\\
This is first line,\\this is second line!

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